79x^2-200x+125=0

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Solution for 79x^2-200x+125=0 equation:


Simplifying
79x2 + -200x + 125 = 0

Reorder the terms:
125 + -200x + 79x2 = 0

Solving
125 + -200x + 79x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
79 the coefficient of the squared term: 

Divide each side by '79'.
1.582278481 + -2.53164557x + x2 = 0

Move the constant term to the right:

Add '-1.582278481' to each side of the equation.
1.582278481 + -2.53164557x + -1.582278481 + x2 = 0 + -1.582278481

Reorder the terms:
1.582278481 + -1.582278481 + -2.53164557x + x2 = 0 + -1.582278481

Combine like terms: 1.582278481 + -1.582278481 = 0.000000000
0.000000000 + -2.53164557x + x2 = 0 + -1.582278481
-2.53164557x + x2 = 0 + -1.582278481

Combine like terms: 0 + -1.582278481 = -1.582278481
-2.53164557x + x2 = -1.582278481

The x term is -2.53164557x.  Take half its coefficient (-1.265822785).
Square it (1.602307323) and add it to both sides.

Add '1.602307323' to each side of the equation.
-2.53164557x + 1.602307323 + x2 = -1.582278481 + 1.602307323

Reorder the terms:
1.602307323 + -2.53164557x + x2 = -1.582278481 + 1.602307323

Combine like terms: -1.582278481 + 1.602307323 = 0.020028842
1.602307323 + -2.53164557x + x2 = 0.020028842

Factor a perfect square on the left side:
(x + -1.265822785)(x + -1.265822785) = 0.020028842

Calculate the square root of the right side: 0.141523291

Break this problem into two subproblems by setting 
(x + -1.265822785) equal to 0.141523291 and -0.141523291.

Subproblem 1

x + -1.265822785 = 0.141523291 Simplifying x + -1.265822785 = 0.141523291 Reorder the terms: -1.265822785 + x = 0.141523291 Solving -1.265822785 + x = 0.141523291 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.265822785' to each side of the equation. -1.265822785 + 1.265822785 + x = 0.141523291 + 1.265822785 Combine like terms: -1.265822785 + 1.265822785 = 0.000000000 0.000000000 + x = 0.141523291 + 1.265822785 x = 0.141523291 + 1.265822785 Combine like terms: 0.141523291 + 1.265822785 = 1.407346076 x = 1.407346076 Simplifying x = 1.407346076

Subproblem 2

x + -1.265822785 = -0.141523291 Simplifying x + -1.265822785 = -0.141523291 Reorder the terms: -1.265822785 + x = -0.141523291 Solving -1.265822785 + x = -0.141523291 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.265822785' to each side of the equation. -1.265822785 + 1.265822785 + x = -0.141523291 + 1.265822785 Combine like terms: -1.265822785 + 1.265822785 = 0.000000000 0.000000000 + x = -0.141523291 + 1.265822785 x = -0.141523291 + 1.265822785 Combine like terms: -0.141523291 + 1.265822785 = 1.124299494 x = 1.124299494 Simplifying x = 1.124299494

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.407346076, 1.124299494}

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